Patents by Inventor Simpert Ludemann

Simpert Ludemann has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 7923388
    Abstract: Polyolefin fiber fabrics can be endowed with oil-repellent properties by treating them first in a plasma atmosphere to raise their surface tension, then with a polyorganosiloxane containing polyoxyalkylene groups and finally with a polyacrylate or polyurethane containing perfluoroalkyl radicals. The fabrics thus obtained are useful for medical as well as other applications.
    Type: Grant
    Filed: May 9, 2007
    Date of Patent: April 12, 2011
    Assignee: Huntsman Textile Effects (Germany) GmbH
    Inventors: Simpert Ludemann, Rule Niederstadt, Jurgen Riedmann, Daniel Wilson
  • Publication number: 20100190879
    Abstract: Compositions according to the invention comprise water, a polyurethane or poly(meth)acrylate having perfluoroalkyl groups and a special siloxane. The treatment of fiber materials, in particular of nonwovens made of polypropylene, leads to articles which have oil-, water- and alcohol-repellency properties and can be used in the medical sector.
    Type: Application
    Filed: September 11, 2008
    Publication date: July 29, 2010
    Applicant: Huntsman Textile Effects (Germany) GmbH
    Inventors: Simpert Ludemann, Rule Niederstadt, Jurgen Riedmann, Daniel Wilson
  • Publication number: 20090264037
    Abstract: Polyolefin fiber fabrics can be endowed with oil-repellent properties by treating them first in a plasma atmosphere to raise their surface tension, then with a polyorganosiloxane containing polyoxyalkylene groups and finally with a polyacrylate or polyurethane containing perfluoroalkyl radicals. The fabrics thus obtained are useful for medical as well as other applications.
    Type: Application
    Filed: May 9, 2007
    Publication date: October 22, 2009
    Applicant: Huntsman Textile Effects (Germany) GmbH
    Inventors: Simpert Ludemann, Rule Niederstadt, Jurgen Riedmann, Daniel Wilson
  • Publication number: 20060155046
    Abstract: The use is described of aqueous dispersions in combination with fluoropolymers for oil- and water-repellent finishing of fiber materials. These dispersions have a long shelf life and contain a composition which is peparable by reaction of polyfunctional isocyanates with a deficiency of comparatively long-chain monohydric alcohols, subsequent reaction with a deficiency of a ketone oxime and final reaction with polyhydric alcohols or amino alcohols.
    Type: Application
    Filed: July 6, 2004
    Publication date: July 13, 2006
    Inventors: Rolf Moors, Simpert Ludemann, Wilhelm Artner, Andreas Eisele, Edeltraud Schidek, Heinz Gaugenrieder
  • Publication number: 20040249165
    Abstract: Fiber materials in the form of fabrics receive, as a result of treatment with compositions according to the invention, a pleasant soft hand and excellent oil- and water-repelling properties with good permanence. The compositions can be obtained by a) preparing a solution of a polysiloxane and an extender with blocked isocyanate groups in an organic solvent, b) dispersing this solution in water, c) removing the organic solvent and d) combining the aqueous dispersion obtained with a second aqueous dispersion which comprises a polymer with perfluoroalkyl groups. One variant of this preparation process consists in cousing a polymer with perfluoroalkyl groups as early as in step a). In this case, step d) can be omitted.
    Type: Application
    Filed: December 4, 2003
    Publication date: December 9, 2004
    Inventors: Franz Dirschl, Edeltraud Schidek, Thu Thao Reimann-Dang, Rolf Moors, Simpert Ludemann, Wilhelm Artner, Heinz Gaugenrieder
  • Publication number: 20030155547
    Abstract: Compositions are described with organopolysiloxanes which contain crosslinked units and are further crosslinkable. The compositions further contain a polyurethane containing blocked isocyanate groups. They are useful for treating fiber materials, especially textile sheet materials, and can be applied thereto in the form of aqueous solutions or dispersions. Textiles which are 50 to 100% by weight wool and have been finished with the compositions exhibit low shrinkage and low felting tendency during washing operations and also a pleasant, soft hand.
    Type: Application
    Filed: October 2, 2002
    Publication date: August 21, 2003
    Inventors: Simpert Ludemann, Jurgen Riedmann, Harald Chrobaczek, Theodor Angele, Lee Howarth
  • Patent number: 6056788
    Abstract: Creases with excellent resistance to washing processes can be produced in 30 to 100% by weight wool fabrics by means of a specific process. The fabrics are preferably in the form of garments; the process can be used to produce trouser creases, for example. The process consists in applying at least one compound having isocyanate groups to the fabric and pressing creases into the fabric under certain moisture and temperature conditions.
    Type: Grant
    Filed: March 4, 1998
    Date of Patent: May 2, 2000
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Erich Rossler, Simpert Ludemann, Jurgen Riedmann, Hans-Peter Rohring
  • Patent number: 5112930
    Abstract: Modified polyurethanes containing perfluoroaliphatic groups which are obtained by reacting oligo(poly)urethanes containing free hydroxyl or isocyanate groups and perfluoroaliphatic groups with di/polyfunctional polysiloxanes at elevated temperatures with conversion of all the reactive groups of the urethane are used for the oil- and water-repellent finishing of fiber materials, conferring on these materials thus treated not only laundering- and drycleaning-stable effects but also in particular a very soft, full hand of very good surface smoothness, these excellent hand effects being further optimized by the addition of a polyethylene dispersion and/or of further customary textile assistants, in particular water-repellent fluorocarbon compounds.
    Type: Grant
    Filed: March 11, 1991
    Date of Patent: May 12, 1992
    Assignee: Ciba-Geigy Corporation
    Inventors: Simpert Ludemann, Michael Bernheim, Bernhard Sandner, Erich Rossler, Hans-Burkhardt Vogel
  • Patent number: 5019428
    Abstract: Modified polyurethanes containing perfluoroaliphalic groups which are obtained by reacting oligo(poly)urethanes containing free hydroxyl or isocyanate groups and perfluoroaliphatic groups with di/polyfunctional polysiloxanes at elevated temperatures with conversion of all the reactive groups of the urethane are used for the oil- and water-repellent finishing of fiber materials, conferring on these materials thus treated not only laundering- and drycleaning-stable effects but also in particular a very soft, full hand of very good surface smoothness, these excellent hand effects being further optimized by the addition of a polyethylene dispersion and/or of further customary textile assistants, in particular water-repellent fluorocarbon compounds.
    Type: Grant
    Filed: January 25, 1989
    Date of Patent: May 28, 1991
    Assignee: Ciba-Geigy Corporation
    Inventors: Simpert Ludemann, Michael Bernheim, Bernhard Sandner, Erich Rossler, Hans-Burkhardt Vogel
  • Patent number: 4895927
    Abstract: The present invention contains a process for manufacturing a water-soluble, self-crosslinking, polymeric condensation product by reacting 1 mole di-C.sub.1-4 -alkylamino-C.sub.24 alkyl(meth)acrylates with 0.3 to 1.5 mol di-C.sub.1-3 -alkyl-phosphonates in the presence of water under heating up to a remarkable increase of the viscosity.If aqueous solutions of these condensation products are used for the treatment of fibrous materials, a very high antistatic effect is imparted to them with only small changes of shade and a very good dry- and wet rubbing fastness as well as water-fastness. The effects show a good permanency.
    Type: Grant
    Filed: March 25, 1988
    Date of Patent: January 23, 1990
    Assignee: Ciba-Geigy Corporation
    Inventors: Simpert Ludemann, Michael Bernheim